Alert archive / North Dakota / Tornado Watches in 1999

Tornado Watch 402

June 6, 199916 counties in Minnesota; 20 counties in North Dakota

The Storm Prediction Center issued this tornado watch at Jun 6, 1999, 12:30 PM CDT for 16 counties in Minnesota; 20 counties in North Dakota. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Jun 6, 1999, 12:30 PM CDT (17:30 UTC)
Expired: Jun 6, 1999, 6:00 PM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 36 counties

Becker County, MN, Beltrami County, MN, Cass County, MN, Clay County, MN, Clearwater County, MN, Hubbard County, MN, Kittson County, MN, Koochiching County, MN, Lake of the Woods County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Barnes County, ND, Benson County, ND, Cass County, ND, Cavalier County, ND, Eddy County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, Kidder County, ND, Nelson County, ND, Pembina County, ND, Pierce County, ND, Ramsey County, ND, Rolette County, ND, Steele County, ND, Stutsman County, ND, Towner County, ND, Traill County, ND, Walsh County, ND, Wells County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 52 km from the middle of the area, began a volume at 17:32 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Warnings issued inside it

28 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jun 6, 1:25 PM CDT	Severe Thunderstorm Warning	FGF	Eddy	35 min
Jun 6, 1:33 PM CDT	Tornado Warning	FGF	Eddy	32 min
Jun 6, 1:43 PM CDT	Tornado Warning	FGF	Benson, Eddy	32 min
Jun 6, 1:51 PM CDT	Tornado Warning	FGF	Ramsey	34 min
Jun 6, 1:57 PM CDT	Tornado Warning	FGF	Nelson, Ramsey	33 min
Jun 6, 2:09 PM CDT	Severe Thunderstorm Warning	FGF	Kittson, Roseau	36 min
Jun 6, 2:26 PM CDT	Tornado Warning	FGF	Ramsey	34 min
Jun 6, 2:29 PM CDT	Severe Thunderstorm Warning	FGF	Benson	36 min
Jun 6, 2:35 PM CDT	Tornado Warning	FGF	Walsh	35 min
Jun 6, 2:46 PM CDT	Tornado Warning	FGF	Roseau	34 min
Jun 6, 3:04 PM CDT	Tornado Warning	FGF	Cavalier	36 min
Jun 6, 3:09 PM CDT	Tornado Warning	FGF	Walsh	36 min
Jun 6, 3:21 PM CDT	Tornado Warning	FGF	Pembina	34 min
Jun 6, 3:34 PM CDT	Tornado Warning	FGF	Marshall, Roseau	36 min
Jun 6, 3:36 PM CDT	Severe Thunderstorm Warning	DLH	Cass	54 min
Jun 6, 3:38 PM CDT	Tornado Warning	FGF	Cavalier	32 min
Jun 6, 3:46 PM CDT	Tornado Warning	FGF	Beltrami	34 min
Jun 6, 3:53 PM CDT	Severe Thunderstorm Warning	FGF	Hubbard, Wadena	32 min
Jun 6, 4:04 PM CDT	Severe Thunderstorm Warning	FGF	Pembina	36 min
Jun 6, 4:08 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami	32 min
Jun 6, 4:10 PM CDT	Severe Thunderstorm Warning	FGF	Cavalier	35 min
Jun 6, 4:14 PM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods, Roseau	36 min
Jun 6, 4:17 PM CDT	Severe Thunderstorm Warning	DLH	Koochiching	43 min
Jun 6, 4:19 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami	36 min
Jun 6, 4:20 PM CDT	Severe Thunderstorm Warning	DLH	Cass	70 min
Jun 6, 4:49 PM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods, Roseau	36 min
Jun 6, 5:25 PM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods	35 min
Jun 6, 5:35 PM CDT	Severe Thunderstorm Warning	DLH	Cass	55 min

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 5.5 hours before the alert went out and 268 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 338 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 874 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 138 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 5, 7:45 PM CDT	Tornado Watch	SPC	Anoka, Blue Earth, Carver, Chisago, Dakota, Dodge and 20 more	6 hr
Jun 5, 9:00 PM CDT	Tornado Watch	SPC	Big Stone, Brown, Chippewa, Cottonwood, Jackson, Kandiyohi and 19 more	5 hr
Jun 5, 9:45 PM CDT	Tornado Watch	SPC	Fillmore, Freeborn, Houston, Mower, Winona	4 hr
Jun 6, 2:00 AM CDT	Severe Thunderstorm Watch	SPC	Wabasha	5 hr
Jun 6, 2:00 AM CDT	Severe Thunderstorm Watch	SPC	Becker, Benton, Big Stone, Cass, Clay, Crow Wing and 20 more	5 hr
Jun 6, 12:45 PM CDT	Severe Thunderstorm Watch	SPC	Fillmore, Houston, Wabasha, Winona	5 hr
Jun 6, 2:00 PM CDT	Tornado Watch	SPC	Aitkin, Anoka, Benton, Blue Earth, Brown, Carver and 32 more	5 hr
Jun 6, 5:15 PM CDT	Tornado Watch	SPC	Aitkin, Anoka, Beltrami, Benton, Blue Earth, Carlton and 44 more	7 hr

Nearby

Tornado Watches in North Dakota, 1999 Tornado Watches in Minnesota, 1999 Every tornado watch in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.